Evaluation of concrete tensile strength as a function of temperature

• Some expressions proposed to date perform well also beyond their scope of development. A more practical expression should rely on compressive strength as reference parameter. single for various concrete types is adequate and appropriate. Alternative are estimate high-temperature tensile strength. accurate in this paper evaluate a function temperature. To purpose, database comprising many well-documented experimental results was prepared number tests were performed by the Author, formulate validate expression, considering both normal high concretes. Several elsewhere literature checked well. In formulation benefits coming from introduction multiple predictor variables investigated, those resulting simple linear regression models. Many shown well, even limits characterising each formulation. Finally, models clearly show that grade mix properties play no significant role reduction with increased